mutube writes: "Tourists visiting the USA have may want to watch what they say, after two British tourists were refused entry on security grounds following a single tweet:

Before his trip, Leigh Van Bryan wrote that he was going to "destroy America". He insisted he was referring to simply having a good time — but was sent home. Trade association Abta told the BBC that the case highlighted that holidaymakers should never do anything to raise "concern or suspicion in any way". The US Department for Homeland Security picked up Mr Bryan's messages ahead of his holiday in Los Angeles. The 26-year-old bar manager wrote a message to a friend on the micro-blogging service, saying: "Free this week, for quick gossip/prep before I go and destroy America." "The Homeland Security agents were treating me like some kind of terrorist," Mr Bryan said. "I kept saying they had got the wrong meaning from my tweet."

In case the intended meaning is lost in translation, he was talking about having a lot to drink."

In the freedom-loving UK, a junior lawyer was heavily fined and given a criminal record for a tweet in which he threatened to blow up an airport if they didn't get rid of the snow. Anybody who lacks the sense to realise that these things will be read by people for whom irony, satire, a sense of humour and, indeed, membership of the human race, is a closed book, and that they will read everything you put in the public domain, deserves what happens to them, if only because if it happens enough, eventually peo